Firefox 3 crashes all the time

Why Firefox crashes all the time? I am not sure. The past couple versions have been very problematic on my system, and that could be for a number of reasons. A firefox extension or plugin could be causing the crashes, but I know it is within Firefox because the crash reporter comes up after the crash. I am going to begin disabling my plugins and extensions until I get rid of these pesky Firefox crashes.

I am running Firefox version 3.0.5 currently. The crashes seem to happen randomly, and they do not happen when Firefox is starting up, and it doesn't seem to be related to loading any particular website.

The page that Mozilla refers one to when they are experiencing random crashes is here: Firefox crashes when loading certain pages
However, since the crashes do not seem to be linked to any certain website, I am referring to this page as well: Firefox crashes

The plan of action to try and fix the firefox crashes will be:

1. Uninstall Firefox and install a clean latest version (tried, unsuccessful)
   
2. Try Firefox in safe mode to see if the problem is a plugin or extension.
3. I don't have any themes installed, so I don't have to worry about that.
   
4. Find updates for all my extensions and plugins.
5. Disable extensions that don't have available updates.
6. If #5 doesn't fix the problem, start disabling working extensions and plugins.